Help from my pals needed: Client changed specs mid-stream...

Hi, working on a corporate promo about 1/4 the way in, and just got this in an email:

Shoot in HD. I appreciate the limitations on the DVD version, but we'll often be showing this on a true 1080p projector from a laptop.

The original spec was for an SD DVD, which I can crank out till the cows come home. Most of the work so far has been on the animations and most of the actual footage has not been shot yet. But on the current timeline are a lot of Motions and stock SD footage using this sequence setting (looks grand by the way):

So I am thinking I could just do this and all might meet the new requirement (whatever a true 1080p projector means, have never used one).

Or do I need to do something else. We can shoot the rest of the footage in HD (we want to test our new Canon 5D) and we rarely go full screen with the footage anyway, as it's mostly in boxes as part of animations (lots or product shots next to people using said products, etc.)

At least with the second sequence settings, my current timeline all looks the same, the motions seem unaffected by the change (yeah!)

So, advice is really appreciated, as we are being dragged into the HD world not too willingly.

Ps. I still plan on delivering an SD DVD, as we don't have blueray players here yet anyway, although this corp. would be the first to get as they are the samsung/sony distributor for Nepal...hmmmm....